Patents Assigned to Farmer's Design Inc.
  • Hydroponic culture apparatus
    Patent number: 5887383
    Abstract: A liquid supply pump unit for hydroponic culture, which can perform oxygen enrichment and has a small power consumption, and a hydroponic culture apparatus, which utilizes this liquid supply pump unit and automatically supplies a larger amount of oxygen in the daytime when the plant growth is active, are disclosed.
    Type: Grant
    Filed: April 24, 1997
    Date of Patent: March 30, 1999
    Assignee: Farmer's Design Inc.
    Inventor: Masanao Soeda